Sofa



FIG. 1 is a front, left perspective view of one embodiment of my new sofa design;

FIG. 2 is a front elevation view of the embodiment of FIG. 1;

FIG. 3 is a rear elevation view of the embodiment of FIG. 1;

FIG. 4 is a left, side elevation view of the embodiment of FIG. 1; and,

FIG. 5 is a right, side elevation view of the embodiment of FIG. 1.

The broken line disclosure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a sofa, as shown and described. 